frame.h revision 308418 
1/*-
2 * Copyright (c) 2003 Peter Wemm.
3 * Copyright (c) 1990 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	from: @(#)frame.h	5.2 (Berkeley) 1/18/91
34 * $FreeBSD: stable/11/sys/x86/include/frame.h 308418 2016-11-07 12:10:17Z kib $
35 */
36
37#ifndef _MACHINE_FRAME_H_
38#define _MACHINE_FRAME_H_ 1
39
40/*
41 * System stack frames.
42 */
43
44#ifdef __i386__
45/*
46 * Exception/Trap Stack Frame
47 */
48
49struct trapframe {
50	int	tf_fs;
51	int	tf_es;
52	int	tf_ds;
53	int	tf_edi;
54	int	tf_esi;
55	int	tf_ebp;
56	int	tf_isp;
57	int	tf_ebx;
58	int	tf_edx;
59	int	tf_ecx;
60	int	tf_eax;
61	int	tf_trapno;
62	/* below portion defined in 386 hardware */
63	int	tf_err;
64	int	tf_eip;
65	int	tf_cs;
66	int	tf_eflags;
67	/* below only when crossing rings (user to kernel) */
68	int	tf_esp;
69	int	tf_ss;
70};
71
72/* Superset of trap frame, for traps from virtual-8086 mode */
73
74struct trapframe_vm86 {
75	int	tf_fs;
76	int	tf_es;
77	int	tf_ds;
78	int	tf_edi;
79	int	tf_esi;
80	int	tf_ebp;
81	int	tf_isp;
82	int	tf_ebx;
83	int	tf_edx;
84	int	tf_ecx;
85	int	tf_eax;
86	int	tf_trapno;
87	/* below portion defined in 386 hardware */
88	int	tf_err;
89	int	tf_eip;
90	int	tf_cs;
91	int	tf_eflags;
92	/* below only when crossing rings (user (including vm86) to kernel) */
93	int	tf_esp;
94	int	tf_ss;
95	/* below only when crossing from vm86 mode to kernel */
96	int	tf_vm86_es;
97	int	tf_vm86_ds;
98	int	tf_vm86_fs;
99	int	tf_vm86_gs;
100};
101
102/*
103 * This alias for the MI TRAPF_USERMODE() should be used when we don't
104 * care about user mode itself, but need to know if a frame has stack
105 * registers.  The difference is only logical, but on i386 the logic
106 * for using TRAPF_USERMODE() is complicated by sometimes treating vm86
107 * bioscall mode (which is a special ring 3 user mode) as kernel mode.
108 */
109#define	TF_HAS_STACKREGS(tf)	TRAPF_USERMODE(tf)
110#endif /* __i386__ */
111
112#ifdef __amd64__
113/*
114 * Exception/Trap Stack Frame
115 *
116 * The ordering of this is specifically so that we can take first 6
117 * the syscall arguments directly from the beginning of the frame.
118 */
119
120struct trapframe {
121	register_t	tf_rdi;
122	register_t	tf_rsi;
123	register_t	tf_rdx;
124	register_t	tf_rcx;
125	register_t	tf_r8;
126	register_t	tf_r9;
127	register_t	tf_rax;
128	register_t	tf_rbx;
129	register_t	tf_rbp;
130	register_t	tf_r10;
131	register_t	tf_r11;
132	register_t	tf_r12;
133	register_t	tf_r13;
134	register_t	tf_r14;
135	register_t	tf_r15;
136	uint32_t	tf_trapno;
137	uint16_t	tf_fs;
138	uint16_t	tf_gs;
139	register_t	tf_addr;
140	uint32_t	tf_flags;
141	uint16_t	tf_es;
142	uint16_t	tf_ds;
143	/* below portion defined in hardware */
144	register_t	tf_err;
145	register_t	tf_rip;
146	register_t	tf_cs;
147	register_t	tf_rflags;
148	/* the amd64 frame always has the stack registers */
149	register_t	tf_rsp;
150	register_t	tf_ss;
151};
152
153#define	TF_HASSEGS	0x1
154#define	TF_HASBASES	0x2
155#define	TF_HASFPXSTATE	0x4
156#endif /* __amd64__ */
157
158#endif /* _MACHINE_FRAME_H_ */
159